[Proj] armenian coordinate system

[Markus Neteler]

On Sat, Apr 3, 2010 at 3:23 PM, Greg Troxel <gdt at ir.bbn.com> wrote:
> Jean-Claude REPETTO <jrepetto at free.fr> writes:
>> Greg Troxel a écrit :
...
>>> # Pulkovo 1942 / 3-degree Gauss-Kruger zone 38
>>> <2555> +proj=tmerc +lat_0=0 +lon_0=114 +k=1 +x_0=38500000 +y_0=0 +ellps=krass +units=m +no_defs  <>
>>
>> This definition is incomplete : the datum shift is missing. Yous should
>> add the +towgs84 parameters.
>
>
> That's straight out of the epsg file, so perhaps a bug to EPSG is in order.

Note: The nad/epsg file does not contain datum values when several datums exist.

I tried to check in http://www.epsg-registry.org/ but it is
non-functional right now.

But I could generate it with a GDAL tool:

epsg_tr.py -pretty_wkt 2555
PROJCS["Pulkovo 1942 / 3-degree Gauss-Kruger zone 38",
    GEOGCS["Pulkovo 1942",
        DATUM["Pulkovo_1942",
            SPHEROID["Krassowsky 1940",6378245,298.3,
                AUTHORITY["EPSG","7024"]],
            TOWGS84[23.9,-141.3,-80.9,-0,0.37,0.85,-0.12],
            AUTHORITY["EPSG","6284"]],
        PRIMEM["Greenwich",0,
            AUTHORITY["EPSG","8901"]],
        UNIT["degree",0.01745329251994328,
            AUTHORITY["EPSG","9122"]],
        AUTHORITY["EPSG","4284"]],
    UNIT["metre",1,
        AUTHORITY["EPSG","9001"]],
    PROJECTION["Transverse_Mercator"],
    PARAMETER["latitude_of_origin",0],
    PARAMETER["central_meridian",114],
    PARAMETER["scale_factor",1],
    PARAMETER["false_easting",38500000],
    PARAMETER["false_northing",0],
    AUTHORITY["EPSG","2555"],
    AXIS["X",NORTH],
    AXIS["Y",EAST]]

@Beppe: can you try this?

Hope this helps,
Markus

-- 
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